TOKEN Ceramic Rear Derailleur Pulley Jocky Wheels 11T Shimano Sram Road Bike MTB Mountain 17 grams, Red Color
Top quality, smooth Sealed Ceramic Bearings;11 tooth, Compatible with Shimaono and Sram derailleurs; CNC Machined from 7075 Aluminum AlloyCeramic Bearings are resistant to corrosionCeramic Bearings are much lighter than steel